PWM 5kVA off-grid inverter with 4 batteries

Solar PCU 5kVA/48V – This PCU charges the batteries by using both grid power and solar energy, which is used as the principal source of energy. Grid electricity is only used when solar energy is absent and the battery voltage drops to a certain level because it is only used as a backup source of energy. When solar power and battery voltage are both reduced to a certain extent, grid electricity is also required.